22222222201212 has 48 divisors (see below), whose sum is σ = 56683747814400. Its totient is φ = 6719948239360.

The previous prime is 22222222201187. The next prime is 22222222201217. The reversal of 22222222201212 is 21210222222222.

It is a super-2 number, since 2×22222222201212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222222201217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175667637 + ... + 175794092.

It is an arithmetic number, because the mean of its divisors is an integer number (1180911412800).

Almost surely, 2^{22222222201212} is an apocalyptic number.

22222222201212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22222222201212 is an abundant number, since it is smaller than the sum of its proper divisors (34461525613188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22222222201212 is a wasteful number, since it uses less digits than its factorization.

22222222201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351462226 (or 351462224 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 22222222201212 its reverse (21210222222222), we get a palindrome (43432444423434).

The spelling of 22222222201212 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred one thousand, two hundred twelve".